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2 years ago

Mrs. Greever has four square desks pushed

Mathematics

1 answer:

Sophie [7]2 years ago

4 0

Answer111

Step-by-step explanation:i111

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Jamir is training for a race and is running laps around a field. If the distance around the field is 250 yards, how many complet

aleksley [76]

Answer:

27 laps

Step-by-step explanation:

1 mile = 1,670 yards

1,670 x 4 = 6,680

6,680 / 250 = 26.72 rounded to the nearest hundreth = 27

6 0

3 years ago

If the farmer has 250 feet of fencing to create a rectangular pen, define a function f that expresses the area of the field (mea

hoa [83]

Answer:

Maximum area possible

f(max) = 3906,25 ft²

Dimensions:

a = 62,5 ft

w = 62,5 ft

Step-by-step explanation:

Perimeter of the rectangular fencing P = 250 feet

And sides of the rectangle a and w (width of rectangle)

Then

A = a*w

2a + 2w = 250 ⇒ a = (250 -2w)/ 2 ⇒ a = 125 - w

f(w) = (125 - w ) *w f(w) = 125w - w²

Taking derivatives both sides of the equation

f´(w) = 125 - 2w f´(w) = 0 125 - 2w = 0

w = 125/2

w = 62,5 ft ⇒ a = 125 - 62,5

a = 62,5 ft

f(max) = ( 62,5)²

f(max) = 3906,25 ft²

8 0

3 years ago

The number of violent crimes committed in a day possesses a distribution with a mean of 2.2 crimes per day and a standard deviat

VARVARA [1.3K]

Answer:

$\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})$

And replacing we got:

$\mu_{\bar X}= 2.2$

$\sigma_{\bar X}= \frac{6}{\sqrt{100}}= 0.6$

Step-by-step explanation:

For this case we have the following info given:

$\mu = 2.2$ represent the mean

$\sigma = 6$ represent the deviation

We select a sample size of n=100. This sample is >30 so then we can use the central limit theorem. And we want to find the distribution for the sample mean and we know that the distribution is given by:

$\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})$

And replacing we got:

$\mu_{\bar X}= 2.2$

$\sigma_{\bar X}= \frac{6}{\sqrt{100}}= 0.6$

6 0

3 years ago

You work 3:30pm-9:00pm. you take a break from 6:00 to 6:30. How many hours do you work in a day

lina2011 [118]

Answer:

You would work 5 hours a day

6 0

2 years ago

Abby's school is 6 blocks west of her house. Her mother works at a store that is 4 blocks east of her school. Use a number line

faltersainse [42]

Answer:

Step-by-step explanation:

Let us give a proper illustration in the number line

let H be Abby's house

and S be the school

let W be her mother's work.

kindly find attached a rough sketch of the number line for your reference

Question:<em> What value represents the difference in position between Abby's house and her mother's store?</em>

basically, the distance between two points on a number line is the difference between the points.

So the value that represents the position between Abby's house and her mother's store is the distance between the two points.

= 4-(-6)

=4+6

=10

7 0

3 years ago